【小王子醫學】評論
來瞭解牛缺乏磷會造成什麼問題1. 降低食慾、年輕牛生長遲滯、低產乳、生育能力受損2. 骨骼肌肉異常，跟骨質疏鬆有關→ 關節僵硬、不願意動3. 常可觀察到異食闢 (但注意，這不具特異性)
【鼠巴拉西】評論
A選項原本題目是出氯，並非...
【只想唸犬貓國考】評論
感覺鈉也可以啊?Phosphorus and sodium (salt) deficiencies are the two most common causes of pica, although it has been shown that zinc, iron, cobalt, magnesium, copper and selenium levels are also low in these cows.https://promar-international.com/picking-apart-the-problem-of-pica/